In-vehicle ppb scale low-concentration odor level assessment method based on handheld electronic nose
An electronic nose, low-concentration technology, used in the analysis of gas mixtures, measuring devices, instruments, etc., can solve the problems of no application of odor detection in the car, no introduction of odor evaluation methods, etc., to achieve light weight, fast detection, and high sensitivity. Effect
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[0029] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments. The embodiment is based on the specific implementation carried out on the premise of the technical solution of the present invention, and provides detailed implementation methods and processes. However, the protection scope of the claims of the present application is not limited to the description of the following embodiments.
[0030] At first technical path of the present invention is described:
[0031] This patent designs an enrichment module based on the principle of adsorbent adsorption and desorption, and the desorption method is heating. The process of gas enrichment and electronic nose sampling includes six stages: low-temperature adsorption stage, airtight recovery stage, heating desorption stage, electronic nose detection stage, adsorption tube cleaning stage, and cooling recovery stage. The enrichment module and the electronic nose detecti...
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